Hodgins



INVENTOR WILLIAM HgCiDGlNS ATTOR NEY United States Patent Qfilice 3,165,235 Patented Jan. 12, 1965 3,165,285 SMOKE PIPE BRACKET William Hodgins, Ottawa, ()ntario, Canada, assignor to Hodgins Combustion Devices Limited, Ottawa, 011- tario, Canada, a company incorporated of Canada Filed Mar. 20, 1963,.Ser. No. 266,599 1 Claim. (Cl. 248-65) priate time delay to allow for the purging of volatiles. This enables the trapping of much useable heat in the furnace and eliminates the entraining of warm air from the building with its replacement by cold air from outside.

In installing a damper-actuating motor unit there are obvious advantages in connecting it directly to the damper shaft but in such close coupling of the parts of motor and its associated elements have been injuriously affected by the exceedingly high temperature of the smoke pipe.

It is an object of the present invention to provide a simple smoke pipe bracket for a damper-operating motor unit that is designed to support the unit for direct attachment to the damper shaft and protect the motor unit from the high temperatures of the adjacent smoke pipe.

A further object of the invention is to provide a bracket of the nature and for the purpose described that is calculated to cause a circulation of cool air between the hot smoke pipe and the motor unit.

A further object of the invention is to provide a smoke pipe bracket for the direct mounting of a damper-actuating motor unit on the damper shaft that is adapted to shield the motor unit from the heat of the smoke pipe by the intervention of a flow of cool air and the further establishment of an insulating barrier between such cool air flow and the motor unit.

To the accomplishment of these and related objects as shall become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts as shall be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claim hereunto appended.

The invention will be best understood and can be more clearly described when reference is had to the drawings forming a part of this disclosure wherein like characters indicate like parts throughout the several views.

In the drawings:

FIGURE 1 is a front elevation of the smoke pipe bracket showing the manner of positioning it on a horizontal smoke pipe;

FIGURE 2 is a vertical section thereof as taken on line 2-2 thereof;

FIGURE 3 is a front elevation of a similar bracket as applied to a vertical smoke pipe;

FIGURE 4 is a plan view thereof; and

FIGURE 5 is a vertical section as taken on line 5-5 of FIGURE 3.

The bracket is preferably fabricated of sheet metal of a suitable gauge and comprises a body portion 1, here shown as a rectangular part with a'wing 2 along each side disposed at right angles to the body portion 1 and parallel with each other. The free edge of these wings are designed to engage the outer wall of the smoke pipe indicated at 3 and so in the case of the bracket seen in FIGURES 3, 4 and 5 applied to a vertical pipe the free edges of the wings are straight as indicated at '4 but in the bracket seen in FIGURES 1 and 2 applied to a horizontal pipe, they are of arcuate con-tour as indicated at 5 to follow the contour of the outer 'wall of the smoke Plpe. A p

V Out-bent lugs 6 are provided at top and bottom of the wings 2 for attachment to the smoke pipe 3 by .suitable means or fasteners such as the rivets 7.

The rectangular body portion 1 that is preferably vertically elongated and the spaced parallel side wings 2 at right angles thereto, together with the contained area of the smoke pipe 3 on which the bracket is mounted provide a vertical air passage or stack 8 up which a current of cooling air is caused to flow that substantially dissipates the radiation of heat from the smoke pipe against the body portion of the bracket.

To augment the thermal barrier of the air space 8 and the heat-dissipating effect of the flow of cool air through the stack, an insulating medium such as an air-pocketing block of asbestos 9 may be applied to the outer side of the body portion 1 of the bracket to assist in positioning which an outwardly extending lip 10 is shown on the lower edge of the bracket body portion 1 though with some types of insulating material it may be sufficient to secure them adhesively to the bracket until the motor unit 11 is mounted on the bracket whereupon the attached motor unit can then serve to retain the insulating member against displacement. The lip 10, however, provides a flared lower end to the vertical stack and serves to accelerate the upward flow of air therethrough.

The bracket is shown as having a pair of spaced threaded apertures 12 to receive motor unit mounting screws, not illustrated, in the usual way. Additionally, the body portion 1 of the bracket has a perforation 13 for the passage of the shaft 14 of damper 15 engaged by the motor unit 11. The insulating element 9 is likewise perforated to pass both the damper shaft 14 and the motor unit mounting screws.

Though the out-bent lugs 6 in the braket shown in FIGURES l and 2 for use on a horizontal smoke pipe are preferably in the form of small feet, such lugs in the case of the bracket shown in FIGURES 3, 4 and 5 may coextensive and run the full height of each wing 2.

For the purpose of clarity in illustrating the bracket, the smoke pipe, damper, damper shaft, attaching rivets, insulating block and motor unit are shown only in phantom outline.

From the foregoing description taken in connection with the accompanying drawings, it will be manifest that a smoke pipe bracket is provided that will fulfill all the necessary requirements of such a device, but as many changes could be made in the above description and many apparently widely different embodiments of the invention may be constructed within the scope of the appended claim, without departing from the spirit or scope thereof, it is intended that all matters contained in the said accompanying specification and drawings shall be interpreted as illustrative and not in a limitative or restrictive sense.

What is claimed as new is:

For a damper-actuating motor unit, a smoke pipe bracket comprising a body portion having an out-turned lip along its lower edge, side wings on opposite sides of said body portion disposed at right angles thereto and parallel to each other and outwardly directed lugs on said wings for securing said bracket to a smoke pipe, said body portion having a centrally disposed perforation to pass the shaft of the smoke pipe damper; the body portion and side wings of said bracket when applied vertically to a horizontal or vertical smoke pipe constituting with the en'gagcd'part of a smoke pipe an uninterrupted vertical stack for the circulation of a flow of cool air between the smoke pipe and the body portion of the brackehand a heat-insulating member on the outer-side of the said body portionsupported by said lip, said lipproviding also a motor unit on:said bracket'is protected from the heat of member. f 2

1 5 flared lower endito said member having a central perforationregistering with the shaft passing perforation in the bodyvv portion, and said body portion stack, whereby a h References Cited by the Examiner V i UNITED STATESPATENTS,

' 431,603 7/90 Mackenzie-Hughes '248300 2,578,993 12/51 Downs 248 65 FOREIGN PATENTS r 539,540 7/55 Belgium. f 820,629 9/59 Great Britain.

10 CLAUDE A;VIQEROY,"-PrimaryExaminer.

' FRANK L. ABBOTT, Examiner; 

